Love but not in love

I love my partner, he’s the father of my child and I couldn’t imagine my life really without him. However, I feel like I’m not in love with him anymore. I feel like we’re best friends who had a baby. I get along with him great and love hanging out with him. In the other hand, I’d probably be okay with no romantic connection at all, as far as intimacy and affection. I never want to have sex with him anymore (this was even before our baby), I don’t like making out with him or anything. We’ve almost broke up a few times but every time I loose my shit and panic. I can’t be without him. My mother is with my dad unhappily for 25 years now and still going. She hates him but because he’s unfaithful. She always said she stayed for us but has yet to leave him and I feel like I understand her now. I’m scared to be alone maybe? I’m extremely attached to him but not in a romantic way. I don’t want to leave him but I’m confused on my feelings? He’s gorgeous and everything I thought I wanted in a man, he takes incredible care of me and maybe it’s that I know I won’t get this love from anyone else. I’ve never been with anyone so good to me so idk why I feel like this. We’re also extremely dependent on each other. We both wouldn’t be where we are without each other. If we split, our lives well definitely change for the worst as far as money, living arrangements, cars, everything. What’s wrong with me? What do I do?